| Why use hydrology tools? Manage site risk and plan drainage strategies by visualizing how water moves and collects across your project location. Whether you're working on a small plot or a massive 40km+ site, these tools help you predict how your land will react to rainfall or spills, so you can act with confidence. |
Flood to level analysis
Visualize the impact of rising water levels to improve emergency preparedness and risk management.
Open the Hydro tab and select Flood to level
Choose your simulation area:
Pick flood level from map: Select a point to simulate water coverage
Select polygon: Use an existing polygon to define a specific area of interest
Adjust the flood level (reference level) to simulate specific elevation scenarios
Surface runoff (Preferential flow path)
Map water flow during rainfall or spills to plan effective containment strategies on sites of any scale.
| ℹ️ Note: We currently use constant values for friction (Manning's value) and infiltration across the simulation region. |
Polygon support: Select an existing polygon to run your simulation on a predefined area
Animation mode: Check the Animate box to see a live simulation of water movement and flow direction
Liquid drop location: Draw a circle or custom polygon to see how a spill would move from a specific point
Color coding: Follow the red-to-purple gradient to track flow depth and direction
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Catchment / Watershed analysis
Identify the specific areas that feed into your streams or dams to mitigate extreme weather risks.
| ℹ️ Note: A breached stream network simulates how water overflows from depressions during extreme weather. Because we’re accounting for these overflows, the stream network you see may not always follow a strictly downhill direction. |
Select Catchment/Watershed analysis from the Hydro tab
Choose a simulation region (existing polygon or create a new one)
Compute the breached stream network to see how depressions overflow in extreme weather
Click an Outflow point to see all contributing stream networks
Direct Rainfall Simulation
Run a digital "stress test" on your site using specific rainfall data to see where pooling occurs, including approximating 10-year or 50-year rain events/floods.
Select your simulation region
Click Simulate direct rainfall and set your parameters:
Simulation length: The total hours to simulate
Rainfall: Upload a CSV to mirror 10-year or 50-year rain events
Simulation quality: Choose between Faster (~6.5ft (2m) grid), Average (~3.5ft (1m) grid), or More accurate (~1.5ft (0.5m) grid)
| 💡 Tip: You can either download the example RAINFALL CSV and customize it or upload your own Rainfall CSV. |
Use the time slider and gradient display to watch water depth changes over time (UOM is consistent with your portal settings)
Once the simulation is complete, select it in the left-hand panel and move the time slider to view the water depth at different times during the simulation.
Learn how to simulate, plan, and manage water and rain events with Propeller's new hydrology tools on our YouTube channel.
I still can't do it!
We wrote these articles to equip you with everything you need to get the job done on your own, but we understand that sometimes this isn't sufficient.
If you're stuck, you can connect with our support team by clicking the question mark button at the top right corner of your user portal.
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